The first half of this book was pretty awful, full of vague generalizations, tales of historical dreams that turned out to have been prophetic, and long paragraphs about the origins of life and consciousness that felt more like a high school research project than a published book. Towards the end it got much more interesting, turning abruptly to synaptic pathways, brain activity during sleep, and actual neuroscience, and that’s when I really got into it. Pity about the rest of the book.